Viscosity and Density of 1-Alkanol (C3–C11) Quaternary and Quinary Systems at Different Temperature Levels.

The measured kinematic viscosity and density and the calculated absolute viscosity for selected quaternary and quinary n-alkanol mixtures are presented in this study. The mixtures are composed of 1-propanol, 1-pentanol, 1- heptanol, 1-nonanol, and 1-undecanol. Both the kinematic viscosity and density were measured for the pure components and several intermediate compositions for the selected mixtures at two temperature levels of 293.15 and 298.15 K. The measured data were used to test the predictive capability of different models. The McAllister three body interaction model and the GC-UNIMOD model showed the best overall predictive capability of all models.